Frequency input window shows Error setting filter type: PhidgetException 0x14 (Operation Not Supported) This API call is not supported. For Class APIs this means that this API is not supported by this device. This can also mean the API is not supported on this OS, or OS configuration. That is after ...

Thank you, it worked.

Windows 10, LabVIEW 2020, current, updated Phidgets software. Library function PhidgetEncoder_setDataInterval fails with recently purchased DAQ1400_0, firmware version 121. Any attempt to change data interval input from -1 results in error 7050, Wrong Device, right at the output of the function. It ...

Figured out how the measurements are affected by the 2 V "floating" voltage. Have a spreadsheet to share if anybody is interested. The simplest model worked well in experiment where 2V are in the loop together with a 540 K resistor, not 1 MOhm. The result is a bias. You may neglect it when...

This is expected behaviour, but you will only see these voltages with a shunt alone, or when floating. The floating voltage is 2V (there is a 2V reference connected to the positive input terminal through 1MOhm). When voltage is applied to the terminals this will be negated and the measurement will ...

mparadis wrote:Are you using the Phidget Control Panel and getting this behaviour?
Is it connected to a VINT Hub, or another Phidget?

And, yes, I am using the Phidget Control Panel to get the DC voltage.

This is expected behaviour, but you will only see these voltages with a shunt alone, or when floating. The floating voltage is 2V (there is a 2V reference connected to the positive input terminal through 1MOhm). When voltage is applied to the terminals this will be negated and the measurement will ...

mparadis wrote:Are you using the Phidget Control Panel and getting this behaviour?
Is it connected to a VINT Hub, or another Phidget?

Yes, it is connected to VINT Hub.

It still shifts zero when I am trying to measure the laser power with the biased, Si Thorlabs photodetector DET10. Experiment: 1. 1 Mohm DC input of the SRS lock-in SR850 shunted with 50 K resistor to avoid overload (the photodiode current is about 0.1 mA, the output voltage of the photodiode will b...

Cannot get zero voltage reading. For the open circuit VCP1000 measures 2V. With 50 K shunt it is 0.18V. With 21 K shunt it is 0.08 V. I am trying to get voltage for the photodetector, Si photodiode. It is a source of current (means its internal impedance is closer to Gigaohm). I was using 50 K shunt...